Method for use of azimuth and bearing data to select a serving sector for a mobile station
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United States of America Patent
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Oct 25, 2011
Grant Date -
Mar 17, 2011
app pub date -
Nov 22, 2010
filing date -
Jul 31, 2007
priority date (Note) -
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Abstract
A method for selecting a wireless coverage sector to serve a mobile station, such as in response to a handoff request that designates a sector-identifier that represents two or more possible sectors. A serving radio access network (RAN) may identify potential sectors in the region and may then select the sector whose azimuth is closest to the geographic bearing of the mobile station from the sector's base station. Further, in the event of a tie between two or more sectors or in other circumstances, the RAN may also take into consideration how close the mobile station is to various base stations, such as selecting the sector to whose base station the mobile station is closest. In a system that uses neighbor lists to govern handoff, the invention can help to facilitate handoff in a scenario where a mobile station requests handoff to a sector not listed in the mobile station's neighbor list.
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